Imiti ya satelite ni ijambo rusange ryuruhererekane rwa cobalt-chromium ivanze irwanya ubushyuhe bwinshi, kwambara no kwangirika. "Icyogajuru" mu ntangiriro yari ipatanti y'itsinda rya Deloro. Mu mwaka wa 2012, itsinda rya Deloro Stellite Group ryaguzwe na Kennametal maze rihinduka ikirango cyanditswe na Kennametal, cyakoreshwaga ku mavuta yihariye ya cobalt.
Ibigize imiti ya satelite:
Umuti wa satelite ni uwumuryango wa cobalt ushingiye kumuryango kandi urimo ibintu byingenzi bikurikira:
Cobalt (Co): Ikintu cya matrix, kibarirwa hafi 50-65% yuburemere bwose, bitanga imbaraga zubushyuhe bwo hejuru cyane hamwe no kurwanya umunaniro wumuriro.
Chromium (Cr): Ibirimo birimo ubusanzwe buri hagati ya 25% na 33%, kandi nurufunguzo rwo gukora urwego rukingira rwinshi rwa chromium oxyde (Cr₂O₃), rutanga umusemburo urwanya imbaraga zidasanzwe zo kurwanya okiside yubushyuhe bukabije no kwangirika.
Tungsten (W) na molybdenum (Mo): Igisubizo nyamukuru gikomeye gishimangira ibintu. Tungsten cyangwa molybdenum bimwe bizahuza na karubone kugirango bikore karbide zikomeye, bizamura cyane ubukana butukura no kwambara birwanya amavuta.
Carbone (C): Ibirimo bihindagurika hagati ya 0.1% na 3.0%. Carbone nicyo kintu cyibanze mu gukora karbide (nka MC, M₂₃C₆, M₇C₃), zinjijwe muri materix ya cobalt nk'utubari twibyuma, bikora "skeleton" kugirango amavuta arwanye kwambara.
Gukomeza imbaraga za Stellite alloy ahanini biva muri matrise ya austenite ikomezwa nigisubizo gikomeye hamwe na karbide yatanzwe muri matrix. Ubu buryo budasanzwe bwo gushimangira butuma icyogajuru gishobora kugabanuka gahoro gahoro imbaraga uko ubushyuhe buzamuka, bikamuha ubushyuhe bukabije cyane.
Ibyiciro byingenzi nibiranga Stellite alloy:
Kwambara urukurikirane
Icyogajuru 1: Urwego rwohejuru rwa karubone na tungsten nyinshi hamwe nuburemere bugera kuri HRC 48-55. Ifite uburyo bwiza bwo kurwanya anti-abrasive kandi ikwiranye nintebe za valve, ibyuma hamwe nimyenda idashobora kwambara, nibindi.
Icyogajuru 4: Imbaraga nyinshi, gukomera cyane. Irakwiriye gushyirwaho kashe ikonje ipfa, ibice byo kwambara cyane, nibindi.
Icyogajuru 6: Urwego rwinshi kandi rusanzwe, ruzwi nka "Jack yubwoko bwose". Ifite impagarike yuzuye yo gukomera (hafi HRC 40) no gukomera, kandi inagaragaza ingaruka nziza zo kurwanya ingaruka, kurwanya ruswa no kurwanya ubushyuhe bwinshi. Irakoreshwa cyane muburyo bwo gufunga valve, moteri ya moteri na bushing zitandukanye, nibindi.
Icyogajuru 12: Imikorere yacyo iri hagati yubwa Stellite 1 na Stellite 6, hamwe nuburemere bwa HRC 45. Biragoye kandi birwanya kwambara kurusha Stellite 6, kandi birakwiriye kubushyuhe bwo hejuru nubushyuhe bwo hejuru cyane, ibiti, ibyuma bisunika imigozi, hamwe nububiko bwo kugenzura.
Icyogajuru 20: Urwego rufite ubukana buhebuje (hafi HRC 60), rwashizweho cyane cyane muburyo bwo kwambara nabi cyane, kandi akenshi rukoreshwa mugutwara amaboko, amasahani adashobora kwambara, hamwe nimpeta zifunga impeta.
Icyogajuru 100: Irwanya ingaruka kandi irwanya cavitation, ahanini igenewe imyambarire ikabije, ikoreshwa kenshi mumashanyarazi ya pompe, ibyuma bya turbine, nibikoresho bya shimi.
Ubushyuhe bwo hejuru / urukurikirane rwangirika
Icyogajuru 21: Carbone nkeya, molybdenum irimo urwego rufite ubukana buhebuje kandi irwanya ubushyuhe bukabije. Ibyuma bya gaz turbine, ububiko bwubushyuhe bwo hejuru, inganda za kirimbuzi.
Icyogajuru 31 (X-40): Harimo nikel, igaragaramo imbaraga zidasanzwe zo mu bushyuhe bwo hejuru no kurwanya umunaniro ukabije, kandi imaze igihe kinini ikoreshwa nkibikoresho byo kuyobora moteri ya moteri ya aero nibice bya gaz turbine.
Icyogajuru 25: Ibirimo bike bya karubone, hamwe no kurwanya umunaniro mwinshi, okiside na sulfidasiyo, bikwiranye nibice byo gutwika.
Urutonde rwimikorere idasanzwe
Tribaloy T-400: Ibirimo byinshi bya molybdenum, ibintu byiza cyane byo mu rwego rwo hejuru byo kwisiga, kugera ku bushyuhe bwo hejuru bwo kwisiga binyuze mu cyiciro cya Laves, cyane cyane bikwiranye n’imyanda yo mu irembo hamwe n’ibikoresho bitarimo amavuta mu bushyuhe bwinshi kandi bitangazamakuru byangirika cyane.
Tribaloy T-800: Molybdenum nyinshi na chromium nyinshi, hamwe no guhangana neza kuruta T-400, bikwiranye nibisabwa cyane, byangirika cyane nubushyuhe bwo hejuru.
Ibyiza nibibi bya Satelite
Ibyiza
Ubukomezi butukura butangaje: Ikintu kigaragara cyane muri Stellite alloy ni uko ishobora gukomeza ubukana nimbaraga nyinshi ndetse no mubushyuhe bwinshi buri hagati ya 650 na 1000 ℃. Carbide zayo ntizongera gushonga kugeza kuri 1100 ℃, bikaba bigoye kubintu byinshi bishingiye ku byuma na nikel kubigeraho.
Kurwanya ruswa yuzuye: Ibintu byinshi bya chromium bituma bifasha gukora firime ihamye ya passiwasi mu bitangazamakuru bitandukanye byangirika, birimo amazi yo mu nyanja, aside sulfurike, aside nitric na gaze yo mu bushyuhe bwo hejuru, byerekana ko irwanya ruswa imwe ndetse n’ahantu. Cyane cyane mubijyanye no kurwanya ruswa yumuriro (nka sulfidation), ibivangwa na satelite akenshi biruta amavuta ya nikel bitewe nubushyuhe bwo hejuru bwa cobalt sulfide.
Imyambarire idasanzwe yo kwambara: Yaba kwambara intermetallic friction (kwambara adhesive) cyangwa kwambara isuri iterwa n'amazi arimo uduce, Stellite alloy ikora neza cyane. Ifite coefficient nkeya yo guterana hamwe nubushobozi bukomeye bwo kurwanya ibishushanyo.
Kurwanya umunaniro mwiza cyane wumuriro: Irashobora kwihanganira ihinduka rikabije ryubushyuhe (guhagarika ubushyuhe bwumuriro) utarinze kumeneka, bigatuma bikwiranye cyane nuburyo bwo gutangira-guhagarara kumiterere ya valve, ibumba, nibindi.
Ingaruka
Imbaraga ziciriritse zidahagije: Ku bushyuhe buciriritse (nka 600-800 ℃), imbaraga za Stellite alloys ni 50-75% gusa yizo mavuta ashingiye kuri nikel bitewe no kubura ibyiciro bikomeza.
Ingorane zo gutunganya cyane: Bitewe nuburemere bwayo bukomeye hamwe nubukomere bukabije, gutunganya gutunganya ibyogajuru bya Stellite biragoye cyane. Mubisanzwe, gusya gusa cyangwa uburyo bwihariye bwo gutunganya birashobora gukoreshwa, bikavamo ibiciro byinshi byo gukora kubice.
Ubushobozi buke: Cobalt ni umutungo wingenzi. Ububiko bwacyo ku isi bugarukira kandi bugabanijwe ku buryo butaringaniye, biganisha ku giciro cyo hejuru cya Stellite alloy. Ku rugero runaka, ibi bigabanya uburyo bunini bwo gukoresha.
Kurwanya okiside ntarengwa: Nubwo irwanya cyane kwangirika kwubushyuhe, kurwanya okiside ya Stellite alloys ahantu heza h’ubushyuhe bwo hejuru bwa okiside ikunze kuba munsi yubwa nikelike ishingiye kuri nikel.
